Fastener for windows or the like.



PATBNTED JUNB14, 1904.

JL A. BELK.

FASTBNER FOR WINDOWS 0R THE LIKE.

APPLICATION FILED MAY 11. 1903.

N0 MODEL.

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Patented June 14, 1904.

JOHN ALGEN BELK, OF FEILDING, NEr ZEALAND.

FASTENER FOR WINDOWS OR THE LIKE.

SPECIFICATION forming part of Letters Patent N0. 762,376, dated June 14, 1904. Application filed May 11, 1903. Serial No. 156,578. (No model.)

T0 all wlwm it may concern,.-

Be it known that I, J oI-IN ALGEN BELK, a subject of the King of Great Britain, residing at Feilding, in the Provincial District of' Canterbury, in the Colony of New Zealand, have invented a new and useful Improved Means for Sustaining and Fasten ing l/Vindow-Sashes, Blind-Rollers, and the Like; and I do hereby declare the following to be a full, clear, and exact description of the same.

According to this invention the sash lines and weights usually employed for sustaining window-sashes in their frames are dispensed with and in their stead 1 employ toothed wheels mounted in casings upon both sides of the window -sash and gearing with racks of similar teeth fixed to the pulley-Stiles of the window-fram e. The axles of' the tooth-wheels have a coiled spring fixed at one end upon them, which is coiled up by the revolution of the wheels when the sash is drawn down.

Blind-rollers may be provided with toothwheels at either end engaging in toothed racks in the window-frame, a spiral or coiled spring,

or springs within the roller being wound up by reason of the toothed wheels working in lthe racks.

Figure 1 is an elevation oi" a window fitted with my invention; Fig. Q, a vertical sectional elevation ot' the apparatus to a larger scale; Fig. 3, a vertical cross-section of the same, and Fig. 4 a front view of part oi' a rack.

The toothed wheels'l are mounted uponthc window-frame '2 in casings 3 and run .freely on axles 4 and gear with racks 5, fixed to the sashes 6. The coil-spring 7 has its inner end fixed to the axle 4 and its outer end fixed to a drum or barrel 8 of the wheel 1 by a screw 9. The ratchet-wheel 10 is fixed to the axle 4 and is retained by the pawl 11, which is pivoted to the casing3 by a pin 1 2. 1

The wheels 1 on the right side of the window are secured by a catch arrangement comprising a pair of right and left hand pawls 13 and 14, pivoted independently of one another on the spindle 17. Two pins 16 are fixed upon and project 'in Vopposite directions from the spindle 17, one beneath each of the pawls 13 and 14. The spindle 17 has a square end 18 fitting into a socket in the revoluble spindle 22, which has a square end 23 fitting into a socket 24 in the end of an operating-key 25, which may be turned by a thumb-nut 26 upon its end. y Y

hen the thumb-nut 26 is turned to the right or left, spindles 22 and 17 turn with it and by means of the pins 16 upon the spindle 17 either the pawl 13 or 14 will be lifted out of` gear with the wheel 1, and when the pins are in their central i position both pawls will remain in engagement with the wheel and prevent it from moving in either direction, thus locking the sash. The coiled-wire spring having arms 19 and E20 tends to keep the pawls 13 and 14, respectively, in engagement with the wheel 1.

By operating the pins the wheel is left free to move in one direction, and the sash may thus be raised or lowered, as the case may be; but if' the pins are left in their central position the sash can neither be raised nor lowered.

The axle 4 has a square hole 21 to receive a key or the end of a screw-driver or the like for winding upand giving the requisite tension to the spring 7.

/Vhen the sash is lowered, the rack 5 operates the wheel 1, with the result that the spring 7 is wound upon the axle 4, which is held stationary by the ratchet-wheel 10 and pawl 11. The energy thus stored up in the spring is ready `for use to raise the sash when the wheel is released by operating the retaining-pawl. A similar spring-drum having teeth gearing into a rack is used upon the opposite side of the sash; butthe retaining-pawls, with the arrangement for operating same, are only required upon one side.

Vhat I claim as my invention, and desire to secure by Letters Patent, is-

1n means for the purpose set forth in combination a` window frame, a sash slidable therein, toothed racks one upon each side of the sash, casings one upon each side of said window-frame, an axle mounted in each casing, toothed Wheels one mounted .upon each axle, drums carried one by each tooth-wheel, coil-springs one' within each drum, ratchetwheels one upon each axle, a retaining-pawl for each ratchet-wheel, right and left hand pawls for each toothed wheel, a spindle upon IOO which said pmvls are independently pivoted, specification in the presence of tWo subserib two pins projecting in opposite directions ing Witnesses. y from each of said spindles each adapted to operate one of said pawls when the spindle is 5 rocked, and ineens for operating Said spindle Vitnesses:

es speeilied and illustrated. E. J ANSTISS,

In testimony whereof I have signed this J H. MURRAY.

JOHN ALGEN BELK. 

